Engine-muffler.



E. TROIKE. ENGINE MUFFLER. APPLICATION FILED I'EB.2,1911.

99 6 Patented Apr. 25, 1911 g mg A/Z'ornew nnns'r .trnorxn, or sla s, onto. r

Application filed February 2, 1911. Serial 1%. casein ".1 p

To all whom it may concern? Be it known that I, Enxs'r TROIKE, a citizen of the United States, residing at Sandusky,- in the county of Erie and State of Ohio, have invented certain new and useful Improvements in Engine-Muillers, of which the following is a speciiieationi This invention embodies improvements in that type of mufllers for explosive engines shown in my issued Letters Patent. No. 950,215, dated February 2-2, 1910, and whercin the muffler described -comprises an e:-i--

haust pipe surrounded by a plurality ofcylinders torming concentric chambers into which the exhaustgases are led, aud from The object oi the invention is the construction shown in my former patent, and to provide an'eud outlet for the muffler ,esperiallyi adapted to its use-in connection withmarineand auto engines For a full understanding of the present invention, reference is to be had to thefollowing'description and to thetaccompanying drawings, in which- Figure l is a longitudinal sectional- View of a device embodying the invention; Fig. 2

is a transverse section taken 5 on the line 2 -2 of Fig, 1; Fig. 3 is a view taken on line 3-3 of Fig. 1; Fig. ids a modification showing a slightly different form otioutlct head.

Throughout the following detail description, and on the several figures of the drawings, similar parts are referred'to by like reference characters. 1'

In the drawings 4 denotes an exhaust ipc threaded at its opposite terminals. An

the pipe i and the other end of said pipe passes through an openingin an inlet head 7. A union 6 is screwed upon the lastmentioned end of the pipe t and is connected with the exhaust pipe of the engine or motor. Between the heads 5 and Tare arranged concentric cylinders 9 and 10 located in spaced relation with respect to each'other, and the pipe 4. The heads 5 and 7 are provided with annular grooves 8 receiving the ehds of the cylinders 9 and 10, and positioning the latter properly with respect to the heads. At its end remote from the union 6,' the pipe 4 has the apertures 12 and at the opposite end portion of the muffler, the cylinder 9 has the apertures 11. The head 5 is of peculiar formation comprising an outermost annular flange directly outlet head 5is connected with one end of ing between the supporting menrb Specification c t-Letters latent. LAP L; 25, 19 1 engaging"th ou'teii bylinder 10, and an i'nner supporting member 13 connected with the head by 'thelateral integral web 16 and the radial webs 1'5. -The head 5 may be tion and thesupporting member 13 has :a lateral boss l4=.projccting therefrom and internally threaded. to receive the threaded end of the pipe 4 adjacent thereto. The

molded so as to afiord an integral construeoutermost portionof the supporting member 13 has one of the grooves 8 before mentioned to receive theend of the cylinder 9. In the operation of the'muiller, the exhaustgases'pass intothe pipe 4 through the apertures 12 and ll'into the space between the cylinders '9 and 10.- From the above space the exhaust gases pass between the radial webs 15 and the s sup orting member-13 an .thebody of: the hea '5, out of the mufiler througha tubular outlet 17. In Fig.4,theoutlet 17 is threaded so that a vpipe may be connectcd thereto to conduct the exhaust gases to any suitable point of escape. The union G-not only atfords acouphng between the pipe 4 and the exhaust ipe of the engine, butit constimember for forcing the tutes'a c ampin head 7 against t e ends of the cylinders 9 and 10. whereby the latter are eiicctively' clamped between the heads 5 and 7 4 Having thus described the invention,

what is claimed as new is:

1. In a m'utller, in combination, a pair. of heads, a 'pipe connected with one of said heads and passing through the other head, concentric cylinders surrounding said pipe and forming annular chambers or compartments, the pipeand innermost cyliuder havingapertures permitting theeexhaust gases to'pass from the pipe to the space between said cylinders, one of the heads having an outlet therein and being provided with a supporting member spaced therefrom. on the inner side thereof and aiiordingthe above ace between the mentioned connection-between the pipe and head, said supporting membcrclosing the adjacent end of the pipe and the adjacent and of the inner cylinder, the head being formed with passages communicating with the interior of the outer cylinder and leader and head to the outlet of the latter;

2.; In a muffler, in combination, an, inlet head,- an outlet head, a pipe extending between said heads and passing through the inlet head, concentric cylinders surrounding pipe ad'acent tb thp inlet -head. gandclamp mg the; s tter againstfths ends of the cylin said ontlie i hlad hai Iing d snpport the outlet head ha'ving anbu'tlet' located adeaopss' I 1 ders -to hqld the latter in properposition ing member integrally connected therewith between tlieheads, the pipe and inner cylinbntspaced from the innr' side thereof, said ders having a ert-ures to. pel mit the exhaust shppqrting membrbping detachahl'ycon-Q gases to ass From the pipe tothespamcel s'urnected with the adja'cent end of the pipe and thefadjac'ntend of the inner cylinder, H in pi sgancs oftwo Witnesses. jacent to the suppoztin ;me mben.ab0ve mention'ed, a union screw upon the=end.-of the.

Witnesses: AL. 0. LERMANN,

O, V. Mxsmm.

ronndd ythe outer cyhndgr and thus ont' vaforesaid and closing said end pf the .pipe -of.the outlet aforesaid.

In testimony whereof I difix my signatnne RNST TROIKE. i 

